ISO 4920:2022 is officially titled:
"Textiles — Determination of resistance to surface wetting (spray test)"
This standard specifies a test method to assess the resistance of fabric surfaces to wetting by water. It uses a spray test, where water is sprayed on the fabric and the wetting pattern is compared against a standard rating chart.
Applicable to a wide range of textile materials, ISO 4920 is especially relevant for:
In real-world use, fabrics are exposed to varying degrees of water—be it rain, splashes, or humidity. Poor surface repellency can result in:
🌧️ Discomfort for the wearer
🧫 Increased microbial growth
📉 Reduced fabric lifespan
❌ Failure to meet functional performance claims
ISO 4920 allows manufacturers to objectively test and rate how well a fabric resists surface wetting, helping ensure performance and customer satisfaction.
Implementing ISO 4920-compliant testing brings significant quality and performance assurance:
💧 Accurate Water Repellency Measurement
Classifies fabric wetting performance on a 0 to 5 spray rating scale.
🧪 Non-Destructive and Simple Test
Uses minimal resources and time, perfect for routine quality checks.
🧥 Supports Functional and Technical Clothing Development
Ensures garments perform as expected under wet conditions.
📏 Quantitative and Repeatable Results
Provides a standardized way to compare materials and treatments.
✅ Validates Coating or Finishing Processes
Confirms the effectiveness of water-repellent finishes and DWR (Durable Water Repellency) treatments.
Partnering with GMC to implement ISO 4920 helps your business:
✅ Ensure Product Performance and Durability
Deliver fabrics that maintain their comfort and function even in wet conditions.
✅ Meet Industry and Buyer Specifications
Satisfy quality requirements from brands, retailers, and procurement agencies.
✅ Strengthen Market Credibility
Demonstrate commitment to ISO-tested, performance-assured products.
✅ Reduce Returns and Complaints
Fewer customer issues due to underperforming water-resistant materials.
✅ Support Certification for Eco and Technical Labels
ISO-compliant testing supports eligibility for eco-labels, protective gear approvals, etc.
✅ Gain Competitive Advantage
Set your textile products apart with validated water-repellent performance.
© Growth Management Corporation. All rights reserved.
Growth Management Corporation is a management consulting firm that provides consulting, training, implementation, and certification services and solutions to organizations of all sizes, and all domains.
